Virtual Systems

Virtual Systems are SAP systems that are planned by not yet physically present. In order to subsequently replace a SAP system by a Virtual System use the same SID for both.

You can create a Virtual System through Tramsport Management System tcode STMS.

Why do I need a Virtual System?

In order to replicate the transport routes of the planned system landscape and to ensure that the import queues of the subsequent system already exist.

During SAP Upgrades or when initailly a sand box or development system is available it is required to create a Virtual System in order to store the development and customizing work in the import queues of the respective planned systems.

This is how a Virtual System is created.

1) Log on to the Transport Domain Controller with a user id having full transport authorizations.

2) Using tcode STMS go to Overview=> Systems=>

3) In the Systems Overview choose SAP System=> Create=> Virtual System

4) In the dialog box TMS => Configure Virtual System, enter the name of the SAP system and a description text. Also specify an SAP system as the Communications system for the Virtual System. (By default the Transport Domain Controller is chosen).This system must be already a part of the transport domain. It cannot be a Virtual System or an external system.

5) Distribute the configuration change.

No RFC addresses can be created for virtual systems, so RFC’s are accessed using the transport directory of an already existing SAP system. This system will act as the Communications Systems and the Virtual System will have to always belong to the same transport group as the assoicated Communication System

After the planned system is physically installed it is time to replace the Virtual System with the realized system.

The procedure for the same is as under:

1) Delete the Virtual System from the transport domain

· Using STMS got to Overview=> Systems

· Chose SAP System=> Delete (confirm)

· Distribute configuration change.

As soon as the configuration change is distributed, the virtual system is deleted. The import queue for this system in TMS disappears but it is available as import buffer at the operating systems level.

Now add the new (physical system) to the transport domain:

1) Initialize the Transport Management System on the real SAP System and include the system in the transport domain.

2) Go to the Transport Domain Controller and accept the system. (As the import buffer is available at the operating system level, no change requests will be lost)

3) Distribute the configuration changes.